AUTHOR'S NOTE: Thank you all for your reviews! I'm glad you're all enjoying the story so far :)
Keep the requests coming also, I'm getting around to them all one by one

As is much needed by now, here's a dirty sex scene...

Enjoy

It was well into the afternoon by the time anyone was awake. Bellatrix woke with a massive headache. She hadn't drank that much, but the drug hangover was just as bad if not worse. Rodolphus continued to sleep beside her, hardly stirring as she sat up and drank a few more gulps of one of the many whisky bottles on the floor to help her dry mouth. She managed to drag herself up and get down to the common room, where Andromeda was sat reading a book in front of the fire.

"Rough night, I'm guessing." Andromeda said as she pursed her lips indignantly.
"Don't give me that look. I know you don't approve." Bellatrix said as she yawned and rubbed her eyes, pulling her open hair into a bun on the top of her head, "Is it breakfast yet?"
"Breakfast?" she asked, raising an eyebrow, "It's 4 in the afternoon."
"Oh." Bellatrix said, rubbing her thigh where it was sore and looking down at herself still in Rodolphus's shirt and her panties.
"There might be some last people in there for lunch." Andy sighed, "I'll come with you. I've not eaten lunch yet."
"Mmhm." Bellatrix murmured, hardly caring for what her sister was saying to her but following her out of the common room.

They went and found there were a few people left. Quickly grabbing a few things to eat as she was absolutely starving, she drank two mugs of hot coffee, clearing her head slightly. Sitting at the table barefoot, hair a mess Bellatrix didn't care as she drank the coffee and helped herself to a slice of the chicken pie amongst the other things there was available for lunch. Andromeda droned on about the book she was reading, and it suddenly occurred to Bellatrix that she knew who could heal the pain in her leg.

"Great, Andy. Now... Do you know where Severus is?" she asked suddenly.
Andromeda shrugged, "Library?"
Finishing her lunch quickly, Bellatrix left with a mug of coffee in her hands and went straight for the library.

After some time, Bellatrix found who she was looking for. Severus Snape was a skinny greasy haired boy, who was constantly picked on by Sirius and his friends. He didn't say much in class, and remained wholly to himself. He hardly saw her approaching, but when he looked up to meet her gaze, he jumped.
"Yes, I look awful, I understand. I need your help." She said simply.
Severus listened as Bellatrix tried to explain her situation, "so you see... Rodolphus didn't mean to do what he did, he just accidentally... did it."

Severus clearly did not believe Bellatrix but he sighed and agreed after some time to help her. They agreed to meet in the prefect bathroom in one hour.

Severus Snape was extremely gifted at potions, and Bellatrix had every intention to exploit his gift at it. She met him in the bathroom, where he handed her a potion.
"Put this on the area and rub it in until it's all sunk in, then have a hot bath. Hot water activates it. Just once and you'll be fine." He said to her, hardly looking at her once as her hands remained on her hips and she nodded.
"Great. Thanks Snapey." She said as she pulled off her shirt. Severus's eyes widened as he watched her strip.
"What are you doing?" he asked suddenly.
"Getting ready to have a bath." Bellatrix said, raising an eyebrow and rolling her eyes at him while she pulled off her shorts.
"Oh... Ok... Well..." he said as he stood and walked to the door.
"Yes. Goodbye Severus. I'll pay you back for it one day or whatever." She said rolling her eyes once more and pushing him out of the door before he could say another word. She shut the door behind her, locking it and rubbing the strange smelling stuff on her thigh after turning all of the taps on.

After but a few minutes, Bellatrix found herself in the huge bathtub, the enchanted mermaid brushing out her hair on the large panelled window as Bellatrix relaxed back into the hot water. She dipped herself in and shut her eyes, drenching her hair and her body completely. When she sat up, she heard the door unlock.

"The door is locked for a reason, get out." She said angrily. No sooner had she picked up her wand ready to send a mild burning hex at whoever had purposely opened the door than none other than her cousin walked in.
"Figured it'd be you to lock the door," He said as he shut it behind him and locked it once more, "What? Going to curse me?"
"Maybe," she said, narrowing her eyes at her cousin. She knew he knew something he shouldn't, "What do you want?"
"The same thing you apparently want. A nice hot bath to help the destroying hangover."
"Can't you wait?" She said as she dropped her wand back onto the side of the bath tub.
"What's wrong? We've been sharing baths since we were three." He grinned, pulling his shirt off.
She pursed her lips, "fine. Get in."
"You going to share that too?" he asked as he undid his belt and slipped into the bath with her, gesturing to the bath sponge. Bellatrix raised an eyebrow as if to tell him to fuck off and Sirius shrugged.
"Just one question though cousin. I'm curious..." he said as he warmed himself in the water.

Bellatrix sighed, there was only one way to get her cousin to stop asking questions, and she knew she had to do whatever it took to get him to shut up and completely forget about those questions he was so in need for asking.
"Actually," she said, moving over to her cousin and bringing her bath sponge with her. She moved close to him, dipping it in the hot water and ran it over his shoulders, "Why not."
"I was reading the paper the other day." He said, relaxing at her touch, his tense shoulders relaxing a little more.

Bellatrix said nothing, but instead moved closer, slipping a leg over her cousin's lap as she pressed herself into his side and moved to his other shoulder. He continued, "And I noticed on the front page what it said about that... 'Dark Mark'."
"Mhmm..." she answered, running her wet hands through his hair and kissing his shoulder, shortly followed by his neck, which she bit at playfully.

Sirius cleared his throat, not used to getting this kind of attention from his cousin unless he had been furious at her only moments before and they had been fighting.
"Well, I just..." he furrowed his eyebrows, confused at her attention.
"What?" she murmured, slipping a leg over his lap properly so her body was pressed to his in a straddling position, and her hand moved from his shoulders to under the water.

He stopped halfway through his sentence to watch as her nails dragged down his chest to his stomach to even further down to grip his length, which was at its fullest thanks to her sudden interest. Bellatrix licked her lips and pressed them to her cousins in a hot kiss, her body fully pressing to his. He was quick to respond, grabbing her hips and pulling her closer and kissing her back without a second's hesitation.

Bellatrix was hardly surprised, it had been a while for them, certainly close to months. She knew he wanted it as badly as she was letting on, though she couldn't deny she was certainly enjoying herself. Her teeth were sharp as they bit at his lower lip, drawing blood. Her temper was hot too, pushing him back hard against the marble of the huge bathtub as he tried to change their position.

Sirius's hands were along his cousin's body, between her thighs, moving to grip her hips and up to drag his nails down her lower back, eliciting a purr of pleasure. He pressed his lips to his cousin's neck, biting and sucking hard enough to leave a love bite. She dropped her head back, pressing herself more so into him before he pulled her perfectly over him in order to get inside of her. Her slick walls tightened around him as he pushed into her with one thrust. Her nails dragged along his upper back, sinking into his shoulders and dragging into him to leave bloodied marks in his perfect skin.

Her mouth immediately found his once more and she kissed him hard, to which he kissed her back. She ground down her hips onto his, moving herself perfectly to the timings of his body. Groaning in pleasure, Sirius gripped her ass, pulling him down onto her hard with every thrust inside of her, which she was clearly enjoying more and more. His mouth found her collar bone, leaving another love bite on them as her nails scratched into him, ripping at his skin and leaving red marks on his body, only spurred on in the hot water.

They moved perfectly with one another, her fingers tangled into his hair as she kissed him once more, before her mouth was on his neck. He pulled her down onto him harder and harder with every thrust, only making her moan louder and to bring him closer and closer with every thrust inside her hot, wet heat. He felt her tighten around his thick, throbbing cock and felt her body press harder into his with every one of his thrusts, their hips meeting perfectly. Soon after, she reached her climax, and her tightness around him only spurred him to continue thrusting into her until finally, he couldn't hold back and he too reached his climax, filling her with his hot liquid.

Bellatrix's body dropped against her cousins which he was clearly relishing as his hands continued roaming her body and holding her against him. They both were out of breath, only having been too long since they had last been together. She was the first to move away, standing and getting out of the tub to ring out her hair on the floor and pull on her shorts and a crop top, which Sirius only recognised as one she wore to bed.

Sirius, who had a grin on his face was shocked to say the least. He immersed himself in the hot water once more and let it get the better of him, deciding to stay a little longer as the water was still hot against his skin.
"I don't think you've ever..." he began, resting his head in his hands behind his head.
"And don't expect it ever again." She said simply, raising an eyebrow.
"Don't I deserve a kiss at least?"
"I've kissed you enough for one day, I think."
He grinned, leaning against the marble of the tub and raised both eyebrows, "come on."
She rolled her eyes, leaning over him to press a kiss to his mouth. He was quick to grip the back of her neck as soon as she tried to move away, to which she had no choice but kiss him back. Her hand pressed to his dripping wet body in attempt to stop him, but only when someone cleared their throats did he move away.

They both looked up and noticed Severus Snape, looking extremely dumbfounded and very embarrassed. The three of them were silent only for a moment. Severus watched them both and frowned, understanding exactly what they had been doing. He gulped, not saying anything as Sirius was the first to suddenly move and throw on his robe as they realised what they had been caught doing and didn't know how much he had already seen.

Without so much as a warning, Severus turned and ran out of the room. Bellatrix was first out of the door after him, grabbing her wand. Sirius followed soon after. They didn't know how much he had seen and they planned on finding out.

Bellatrix was quick to catch up with him as he walked away fast, she gripped him by his robes and threw him back against the wall, holding her wand against his chin.
"What did you see?" she hissed.
"Nothing, I swear, nothing!" he said desperately, terrified she would hurt him beyond his imagination.
Sirius followed soon after, standing beside his cousin as she still had one hand on his robes and her wand on his throat.
"Don't lie!" Sirius growled darkly.
"I'm not." He snapped back before his eyes turned back onto Bellatrix, "You're hurting me."
"I'll be doing a lot worse in a second if you keep lying to us." She hissed dangerously, gritting her teeth and digging her wand into his throat harder.
"Ok, ok just let go!" he said as he pressed hard into the wall.
Bellatrix loosened her grip, but her arm mirrored her cousins and pressed to the wall on the other side of Severus so he was still trapped. Severus continued, "I just... Well... I saw you in the bathtub together, and... and, you're cousins!"
"Keep your voice down!" Bellatrix snarled as she looked around the empty corridor.
"Whatever you think you saw, forget it," Sirius said, towering above Snape, Bellatrix not far off being taller than him either. He gulped and nodded.
"I swear." He said quickly, "I won't tell anyone. I swear."

The cousins glanced at one another and smiled a little, both saying at the same time, "good."
They moved away from him, Sirius turned once more but Bellatrix stayed as she was, tucking her wand into her side pocket and folding her arms. She grit her teeth, suddenly hissing, "scram."
Severus immediately did as he was told, jumping and almost running away. Sirius turned to his cousin.
"You know, I really wish you'd teach me how to make people that scared." He said rather impressed.
Bellatrix couldn't help but grin, "Sorry cousin. It can't be taught, it's an art."